捆绑式气动冲击锤嵌岩施工技术
Rock-socketed Construction Technique Using Binding Pneumatic Impact Hammer
浏览(2277) 下载(1)
- DOI:
- 作者:
- 朱根民1, 谢贱根1, 金凌云2
ZHU Gen-min1
- 作者单位:
- 1. 舟山国家石油储备基地有限责任公司,浙江舟山 316000;
2. 舟山市建筑工程质量监督站,浙江舟山 316000
Zhoushan National Oil Reserve Base Co. Ltd., Zhoushan 316000, China
- 关键词:
- 捆绑式冲击锤;嵌岩灌注桩;施工技术
binding pneumatic impact hammer;rock-socketed grouting pile;construction technology
- 摘要:
- 气动冲击锤在国内外已被广泛用于硬岩地质条件下的工程施工,捆绑式气动冲击锤,可以直接一次性完成较单体冲击锤直径大得多的混凝土嵌岩灌注桩。文章介绍了两个工程实例:(1)采用捆绑式气动冲击锤对基岩直接出露的地基成孔,与爆破成孔相比,成孔规则,孔深相对较浅就能满足设计要求,成桩速度快。(2)用振动压管机压管、长螺旋钻取土和捆绑式气动冲击锤破岩的联合工法,可有效地解决桩长在20m左右嵌岩桩成孔难的问题。
Pneumatic impact hammers have been widely used for engineering construction in hard rocky geological condition at home and abroad. And a binding pneumatic impact hammer, compared with a single pneumatic impact hammer, can directly make rock-socketed grouting pile with much bigger diameter in once operation. Two engineering cases are introduced in this paper: （1） hole-making with a binding impact hammer in bared bedrock foundation. It is faster and has a better hole forming than blasting hole-making and meets design requirement even if the hole depth is smaller. （2） the combining method, i.e. using a binding impact hammer for breaking rock, a vibrating pressure pile machine for pressing pile and a long twist driller for recovering soil. It is able to solve the difficult hole-making problem of rock-socketed pile with a pile length over 20 m.2009,1(1): 75-77 收稿日期：2008-5-27分类号：TU753作者简介：朱根民（1963-）, 男, 苏州人, 高级工程师,1985年毕业于解放军后勤工程学院石油储运专业, 现从事石油工程建设管理工作。